I'm not sure a stepdad not going to school parents' evenings or other school events is really a problem. Has your daughter said she wants him to do stuff like that? It sounds as if he has been very supportive in much more important ways and in ways that he felt were suitable.
I don't think the reason he has given for not joining in various things is "crap". It's a valid reason to him. Also, if she's often rude to him, I don't blame him for not wanting to accompany her to things.
When she is rude to him, do you tell her not to speak to him like that? If not, then it's your own fault you're pig in the middle. Not that that excuses him being rude back but nipping her rudeness in the bud might help.
Good Morning Friday 7th August 2026
A group of Cambridge academics want any inquiry into recruitment and selection processes.
Professor Jason Arday - plagiarism etc

for everyone !
